The U. S. Census Bureau compiles data on family income and summarizes its findings in Current Population Reports. The table below is a frequency distribution of the annual incomes for a random sample of U. S. families. Find an estimate of the probability that a randomly selected U. S. family has an income between $ 60,000 and $ 199,999.
Frequency Income (in thousands) FamIncomes Under $ 20,000 11,470 $ 20,000€“$ 39,999 17,572 $ 40,000€“$ 59,999 14,534 $ 60,000€“$ 79,999 11,410 $ 80,000€“$ 99,999 7,535 $ 100,000€“$ 199,999 11,197 $ 200,000 and above 2,280 75,998

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Frequency (în thousands) 't Famincomes Income Under $20,000 $20,000-$39,999 $40,000-559,999 $60,000-$79,999 $80,000-599,999 $100,000-$199,999 $200,000 and above 11,470 17,572 14,534 11,410 7,535 11,197 2,280 75,998